Original ArticlesRole of motor and cognitive tasks in gait of individuals with mild cognitive impairmentGoyal, Nikitaa; Luna, Geraldineb; Curuk, Etema; Aruin, Alexander S.aAuthor Information aDepartment of Physical Therapy bDivision of Academic Internal Medicine and Geriatrics, University of Illinois at Chicago, Chicago, Illinois, USA Received 8 January 2019 Accepted 9 February 2019 Correspondence to Alexander S. Aruin, PhD, Department of Physical Therapy (MC 898), University of Illinois at Chicago, 1919 West Taylor Street, Chicago, IL 60612, USA, Tel: +1 312 355 0904; fax: +1 312 996 4583; e-mail: [email protected] International Journal of Rehabilitation Research: June 2019 - Volume 42 - Issue 2 - p 174-179 doi: 10.1097/MRR.0000000000000341 Buy Metrics Abstract Older adults with mild cognitive impairment (MCI) experience difficulties with memory and task execution. Walking while performing a secondary task could affect gait of individuals with MCI and increase fall risk. The aim of the study was to investigate gait in individuals with MCI performing motor and cognitive secondary tasks. Eight individuals with MCI and eight age-matched healthy older adults walked over the GAITRite walkway under three different conditions: with no secondary task, while carrying a glass of water in their dominant hand (motor task), and while reciting alphabet [cognitive task (CT)]. Gait velocity, cadence, step length, and stride length were calculated. With no secondary task individuals with MCI as compared with the healthy older adults walked slower (P < 0.001) and with shorter step and stride length. When a secondary task was added, gait performance of the individuals with MCI deteriorated even more. The largest decline in gait was seen during the performance of the CT as compared with motor task (P < 0.001). The outcome provides a basis for future studies of the effect of the secondary motor task and CT in the identification of MCI as well as in planning rehabilitation interventions. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.